Unit 5 geometry test part 3

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2